Answer:
The length and width of the rectangle is 53 inches and 16 inches respectively.
Explanation:
Let the width of a rectangle is x, then its length is 5+3x.
The perimeter of the rectangle = 138 inches
We need to find the dimension of the rectangle.
The formula for the perimeter of a rectangle is given by :
P = 2(l+b)
Putting all the values,
2(5+3x+x) = 138
2(5+4x) = 138
5+4x = 69
4x = 64
x = 16
Width = 16 inches
Length = 5+3(16)
= 53 inches
Hence, the length and width of the rectangle is 53 inches and 16 inches respectively.